Like i said on an OLLLD blog: Vergo's name; means in
latin "stick" : because of his weapon, a bamboo
stick. So you know; he has a "sticky" memory; and
foods/items stuck on his cheek: this is a pun
Stick/stick.

So, now: see his skills: He can uses the Vulcanization a
capacity of the rubber: like Luffy ! And he resists
the Law's thunderbolts ! (Ch683) So Is he...in
rubber? No, too much Kishimoto for Oda...

So: IMO, he has the paramecia of glue: you know, Stick
pun, items can stuck on him and he has some rubber capacities: and
a lot of glues are made, in part, of rubb…